The phrase "are very certain about" is correct and usable in written English.
You can use it when expressing a strong belief or confidence regarding a particular subject or situation.
Example: "After reviewing all the evidence, we are very certain about the outcome of the investigation."
Alternatives: "are quite sure about" or "are confident in".
This indicates the existence of a substantial amount of trials in which participant's response is incorrect and yet they are very certain about their response.
In Figure 1f, a prior distribution is specified where a very low score of reading skills is expected and we are very certain about obtaining such a mean score in our data.
For example, in response to VNOS-C question 6 about the definition of a species, several students wrote that scientists are very certain about the definition of a species because they invented the definition themselves, suggesting an informed understanding that species is a human construct.
If you are very certain about your keywords, put that word or phrase in the "This exact word or phrase" field under "All these words".
"There definitely is going to be some rain – that we can be very certain about," said Emma Sharples, a meteorologist from the Met Office.
But Time Warner can be very certain about one thing: in HBO, it has an asset that's worth close to thirty billion dollars in a spinoff.
But what I am very certain about is that cities and metropolitan areas constantly innovate.
"Her resolve was strong, and she was very certain about her decision to terminate her pregnancy," Garza said.
While some patients were very certain about what triggered their attacks, others stated that attacks sometimes occur with no known trigger.
Similarly, if cohabitation is a common alternative to marriage, the couples who nevertheless choose to marry are likely to be very certain about and satisfied with their relationship, thereby increasing the average level of well-being of married people (Kalmijn 2010; Stack and Eshleman 1998).
